31357980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 102604320

約数和(自身を除く): 71246340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 53, 57, 60, 76, 90, 95, 106, 114, 159, 171, 173, 180, 190, 212, 228, 265, 285, 318, 342, 346, 380, 477, 519, 530, 570, 636, 684, 692, 795, 855, 865, 954, 1007, 1038, 1060, 1140, 1557, 1590, 1710, 1730, 1908, 2014, 2076, 2385, 2595, 3021, 3114, 3180, 3287, 3420, 3460, 4028, 4770, 5035, 5190, 6042, 6228, 6574, 7785, 9063, 9169, 9540, 9861, 10070, 10380, 12084, 13148, 15105, 15570, 16435, 18126, 18338, 19722, 20140, 27507, 29583, 30210, 31140, 32870, 36252, 36676, 39444, 45315, 45845, 49305, 55014, 59166, 60420, 65740, 82521, 90630, 91690, 98610, 110028, 118332, 137535, 147915, 165042, 174211, 181260, 183380, 197220, 275070, 295830, 330084, 348422, 412605, 522633, 550140, 591660, 696844, 825210, 871055, 1045266, 1567899, 1650420, 1742110, 2090532, 2613165, 3135798, 3484220, 5226330, 6271596, 7839495, 10452660, 15678990, 31357980]

約数ペア:

[(1, 31357980), (2, 15678990), (3, 10452660), (4, 7839495), (5, 6271596), (6, 5226330), (9, 3484220), (10, 3135798), (12, 2613165), (15, 2090532), (18, 1742110), (19, 1650420), (20, 1567899), (30, 1045266), (36, 871055), (38, 825210), (45, 696844), (53, 591660), (57, 550140), (60, 522633), (76, 412605), (90, 348422), (95, 330084), (106, 295830), (114, 275070), (159, 197220), (171, 183380), (173, 181260), (180, 174211), (190, 165042), (212, 147915), (228, 137535), (265, 118332), (285, 110028), (318, 98610), (342, 91690), (346, 90630), (380, 82521), (477, 65740), (519, 60420), (530, 59166), (570, 55014), (636, 49305), (684, 45845), (692, 45315), (795, 39444), (855, 36676), (865, 36252), (954, 32870), (1007, 31140), (1038, 30210), (1060, 29583), (1140, 27507), (1557, 20140), (1590, 19722), (1710, 18338), (1730, 18126), (1908, 16435), (2014, 15570), (2076, 15105), (2385, 13148), (2595, 12084), (3021, 10380), (3114, 10070), (3180, 9861), (3287, 9540), (3420, 9169), (3460, 9063), (4028, 7785), (4770, 6574), (5035, 6228), (5190, 6042)]