1781447220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{74413}}^1$

素因数の和:74454

約数の個数: 144

約数和(自身を含む): 6500807040

約数和(自身を除く): 4719359820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 855, 1140, 1197, 1260, 1330, 1596, 1710, 1995, 2394, 2660, 3420, 3990, 4788, 5985, 7980, 11970, 23940, 74413, 148826, 223239, 297652, 372065, 446478, 520891, 669717, 744130, 892956, 1041782, 1116195, 1339434, 1413847, 1488260, 1562673, 2083564, 2232390, 2604455, 2678868, 2827694, 3125346, 3348585, 4241541, 4464780, 4688019, 5208910, 5655388, 6250692, 6697170, 7069235, 7813365, 8483082, 9376038, 9896929, 10417820, 12724623, 13394340, 14138470, 15626730, 16966164, 18752076, 19793858, 21207705, 23440095, 25449246, 28276940, 29690787, 31253460, 39587716, 42415410, 46880190, 49484645, 50898492, 59381574, 63623115, 84830820, 89072361, 93760380, 98969290, 118763148, 127246230, 148453935, 178144722, 197938580, 254492460, 296907870, 356289444, 445361805, 593815740, 890723610, 1781447220]

約数ペア:

[(1, 1781447220), (2, 890723610), (3, 593815740), (4, 445361805), (5, 356289444), (6, 296907870), (7, 254492460), (9, 197938580), (10, 178144722), (12, 148453935), (14, 127246230), (15, 118763148), (18, 98969290), (19, 93760380), (20, 89072361), (21, 84830820), (28, 63623115), (30, 59381574), (35, 50898492), (36, 49484645), (38, 46880190), (42, 42415410), (45, 39587716), (57, 31253460), (60, 29690787), (63, 28276940), (70, 25449246), (76, 23440095), (84, 21207705), (90, 19793858), (95, 18752076), (105, 16966164), (114, 15626730), (126, 14138470), (133, 13394340), (140, 12724623), (171, 10417820), (180, 9896929), (190, 9376038), (210, 8483082), (228, 7813365), (252, 7069235), (266, 6697170), (285, 6250692), (315, 5655388), (342, 5208910), (380, 4688019), (399, 4464780), (420, 4241541), (532, 3348585), (570, 3125346), (630, 2827694), (665, 2678868), (684, 2604455), (798, 2232390), (855, 2083564), (1140, 1562673), (1197, 1488260), (1260, 1413847), (1330, 1339434), (1596, 1116195), (1710, 1041782), (1995, 892956), (2394, 744130), (2660, 669717), (3420, 520891), (3990, 446478), (4788, 372065), (5985, 297652), (7980, 223239), (11970, 148826), (23940, 74413)]