28416780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1187}}^1$

素因数の和:1228

約数の個数: 144

約数和(自身を含む): 103783680

約数和(自身を除く): 75366900

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, 1187, 1197, 1260, 1330, 1596, 1710, 1995, 2374, 2394, 2660, 3420, 3561, 3990, 4748, 4788, 5935, 5985, 7122, 7980, 8309, 10683, 11870, 11970, 14244, 16618, 17805, 21366, 22553, 23740, 23940, 24927, 33236, 35610, 41545, 42732, 45106, 49854, 53415, 67659, 71220, 74781, 83090, 90212, 99708, 106830, 112765, 124635, 135318, 149562, 157871, 166180, 202977, 213660, 225530, 249270, 270636, 299124, 315742, 338295, 373905, 405954, 451060, 473613, 498540, 631484, 676590, 747810, 789355, 811908, 947226, 1014885, 1353180, 1420839, 1495620, 1578710, 1894452, 2029770, 2368065, 2841678, 3157420, 4059540, 4736130, 5683356, 7104195, 9472260, 14208390, 28416780]

約数ペア:

[(1, 28416780), (2, 14208390), (3, 9472260), (4, 7104195), (5, 5683356), (6, 4736130), (7, 4059540), (9, 3157420), (10, 2841678), (12, 2368065), (14, 2029770), (15, 1894452), (18, 1578710), (19, 1495620), (20, 1420839), (21, 1353180), (28, 1014885), (30, 947226), (35, 811908), (36, 789355), (38, 747810), (42, 676590), (45, 631484), (57, 498540), (60, 473613), (63, 451060), (70, 405954), (76, 373905), (84, 338295), (90, 315742), (95, 299124), (105, 270636), (114, 249270), (126, 225530), (133, 213660), (140, 202977), (171, 166180), (180, 157871), (190, 149562), (210, 135318), (228, 124635), (252, 112765), (266, 106830), (285, 99708), (315, 90212), (342, 83090), (380, 74781), (399, 71220), (420, 67659), (532, 53415), (570, 49854), (630, 45106), (665, 42732), (684, 41545), (798, 35610), (855, 33236), (1140, 24927), (1187, 23940), (1197, 23740), (1260, 22553), (1330, 21366), (1596, 17805), (1710, 16618), (1995, 14244), (2374, 11970), (2394, 11870), (2660, 10683), (3420, 8309), (3561, 7980), (3990, 7122), (4748, 5985), (4788, 5935)]