81707220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3413}}^1$

素因数の和:3454

約数の個数: 144

約数和(自身を含む): 298247040

約数和(自身を除く): 216539820

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, 3413, 3420, 3990, 4788, 5985, 6826, 7980, 10239, 11970, 13652, 17065, 20478, 23891, 23940, 30717, 34130, 40956, 47782, 51195, 61434, 64847, 68260, 71673, 95564, 102390, 119455, 122868, 129694, 143346, 153585, 194541, 204780, 215019, 238910, 259388, 286692, 307170, 324235, 358365, 389082, 430038, 453929, 477820, 583623, 614340, 648470, 716730, 778164, 860076, 907858, 972705, 1075095, 1167246, 1296940, 1361787, 1433460, 1815716, 1945410, 2150190, 2269645, 2334492, 2723574, 2918115, 3890820, 4085361, 4300380, 4539290, 5447148, 5836230, 6808935, 8170722, 9078580, 11672460, 13617870, 16341444, 20426805, 27235740, 40853610, 81707220]

約数ペア:

[(1, 81707220), (2, 40853610), (3, 27235740), (4, 20426805), (5, 16341444), (6, 13617870), (7, 11672460), (9, 9078580), (10, 8170722), (12, 6808935), (14, 5836230), (15, 5447148), (18, 4539290), (19, 4300380), (20, 4085361), (21, 3890820), (28, 2918115), (30, 2723574), (35, 2334492), (36, 2269645), (38, 2150190), (42, 1945410), (45, 1815716), (57, 1433460), (60, 1361787), (63, 1296940), (70, 1167246), (76, 1075095), (84, 972705), (90, 907858), (95, 860076), (105, 778164), (114, 716730), (126, 648470), (133, 614340), (140, 583623), (171, 477820), (180, 453929), (190, 430038), (210, 389082), (228, 358365), (252, 324235), (266, 307170), (285, 286692), (315, 259388), (342, 238910), (380, 215019), (399, 204780), (420, 194541), (532, 153585), (570, 143346), (630, 129694), (665, 122868), (684, 119455), (798, 102390), (855, 95564), (1140, 71673), (1197, 68260), (1260, 64847), (1330, 61434), (1596, 51195), (1710, 47782), (1995, 40956), (2394, 34130), (2660, 30717), (3413, 23940), (3420, 23891), (3990, 20478), (4788, 17065), (5985, 13652), (6826, 11970), (7980, 10239)]