128778468

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1042

約数の個数: 144

約数和(自身を含む): 398974464

約数和(自身を除く): 270195996

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 21, 26, 28, 34, 39, 42, 49, 51, 52, 68, 78, 84, 91, 98, 102, 119, 147, 156, 182, 196, 204, 221, 238, 273, 294, 357, 364, 442, 476, 546, 588, 637, 663, 714, 833, 884, 991, 1092, 1274, 1326, 1428, 1547, 1666, 1911, 1982, 2499, 2548, 2652, 2973, 3094, 3332, 3822, 3964, 4641, 4998, 5946, 6188, 6937, 7644, 9282, 9996, 10829, 11892, 12883, 13874, 16847, 18564, 20811, 21658, 25766, 27748, 32487, 33694, 38649, 41622, 43316, 48559, 50541, 51532, 64974, 67388, 77298, 83244, 90181, 97118, 101082, 117929, 129948, 145677, 154596, 180362, 194236, 202164, 219011, 235858, 270543, 291354, 353787, 360724, 438022, 471716, 541086, 582708, 631267, 657033, 707574, 825503, 876044, 1082172, 1262534, 1314066, 1415148, 1533077, 1651006, 1893801, 2476509, 2525068, 2628132, 3066154, 3302012, 3787602, 4599231, 4953018, 6132308, 7575204, 9198462, 9906036, 10731539, 18396924, 21463078, 32194617, 42926156, 64389234, 128778468]

約数ペア:

[(1, 128778468), (2, 64389234), (3, 42926156), (4, 32194617), (6, 21463078), (7, 18396924), (12, 10731539), (13, 9906036), (14, 9198462), (17, 7575204), (21, 6132308), (26, 4953018), (28, 4599231), (34, 3787602), (39, 3302012), (42, 3066154), (49, 2628132), (51, 2525068), (52, 2476509), (68, 1893801), (78, 1651006), (84, 1533077), (91, 1415148), (98, 1314066), (102, 1262534), (119, 1082172), (147, 876044), (156, 825503), (182, 707574), (196, 657033), (204, 631267), (221, 582708), (238, 541086), (273, 471716), (294, 438022), (357, 360724), (364, 353787), (442, 291354), (476, 270543), (546, 235858), (588, 219011), (637, 202164), (663, 194236), (714, 180362), (833, 154596), (884, 145677), (991, 129948), (1092, 117929), (1274, 101082), (1326, 97118), (1428, 90181), (1547, 83244), (1666, 77298), (1911, 67388), (1982, 64974), (2499, 51532), (2548, 50541), (2652, 48559), (2973, 43316), (3094, 41622), (3332, 38649), (3822, 33694), (3964, 32487), (4641, 27748), (4998, 25766), (5946, 21658), (6188, 20811), (6937, 18564), (7644, 16847), (9282, 13874), (9996, 12883), (10829, 11892)]