19941990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:605

約数の個数: 64

約数和(自身を含む): 50706432

約数和(自身を除く): 30764442

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 41, 62, 82, 93, 123, 155, 186, 205, 246, 310, 410, 465, 523, 615, 930, 1046, 1230, 1271, 1569, 2542, 2615, 3138, 3813, 5230, 6355, 7626, 7845, 12710, 15690, 16213, 19065, 21443, 32426, 38130, 42886, 48639, 64329, 81065, 97278, 107215, 128658, 162130, 214430, 243195, 321645, 486390, 643290, 664733, 1329466, 1994199, 3323665, 3988398, 6647330, 9970995, 19941990]

約数ペア:

[(1, 19941990), (2, 9970995), (3, 6647330), (5, 3988398), (6, 3323665), (10, 1994199), (15, 1329466), (30, 664733), (31, 643290), (41, 486390), (62, 321645), (82, 243195), (93, 214430), (123, 162130), (155, 128658), (186, 107215), (205, 97278), (246, 81065), (310, 64329), (410, 48639), (465, 42886), (523, 38130), (615, 32426), (930, 21443), (1046, 19065), (1230, 16213), (1271, 15690), (1569, 12710), (2542, 7845), (2615, 7626), (3138, 6355), (3813, 5230)]