30990440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{977}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 76401360

約数和(自身を除く): 45410920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 977, 1220, 1586, 1954, 2440, 3172, 3908, 3965, 4885, 6344, 7816, 7930, 9770, 12701, 15860, 19540, 25402, 31720, 39080, 50804, 59597, 63505, 101608, 119194, 127010, 238388, 254020, 297985, 476776, 508040, 595970, 774761, 1191940, 1549522, 2383880, 3099044, 3873805, 6198088, 7747610, 15495220, 30990440]

約数ペア:

[(1, 30990440), (2, 15495220), (4, 7747610), (5, 6198088), (8, 3873805), (10, 3099044), (13, 2383880), (20, 1549522), (26, 1191940), (40, 774761), (52, 595970), (61, 508040), (65, 476776), (104, 297985), (122, 254020), (130, 238388), (244, 127010), (260, 119194), (305, 101608), (488, 63505), (520, 59597), (610, 50804), (793, 39080), (977, 31720), (1220, 25402), (1586, 19540), (1954, 15860), (2440, 12701), (3172, 9770), (3908, 7930), (3965, 7816), (4885, 6344)]